Whether the writer’s sentiment about not running out of metals is agreeable or not has to be explained. Concept introduction: A galvanic cell is an electrochemical cell. Electrochemical cell is a device capable of converting chemical energy into electrical energy or induces chemical energy by electrical energy. In the galvanic cell spontaneous redox reaction takes place. Redox reaction means the reaction in which the oxidation state of the atoms changes due to the occurrence of both reduction and its complementary oxidation reactions. The element under oxidation reaction loses electron whereas the element in the reduction gains electron.

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Chapter 7, Problem 47Q

(a)

Interpretation Introduction

Interpretation:

Whether the writer’s sentiment about not running out of metals is agreeable or not has to be explained.

Concept introduction:

A galvanic cell is an electrochemical cell. Electrochemical cell is a device capable of converting chemical energy into electrical energy or induces chemical energy by electrical energy. In the galvanic cell spontaneous redox reaction takes place. Redox reaction means the reaction in which the oxidation state of the atoms changes due to the occurrence of both reduction and its complementary oxidation reactions. The element under oxidation reaction loses electron whereas the element in the reduction gains electron.

(b)

Interpretation Introduction

Interpretation:

Two challenges connected with increasing the recycling of batteries have to be named.

Concept introduction:

Electrochemical cell is a device capable of converting chemical energy into electrical energy or induces chemical energy by electrical energy. In the galvanic cell spontaneous redox reaction takes place. Redox reaction means the reaction in which the oxidation state of the atoms changes due to the occurrence of both reduction and its complementary oxidation reactions. The element under oxidation reaction loses electron whereas the element in the reduction gains electron.

Rechargeable battery work because they use reaction are reversible, while non-rechargeable battery they use reactions are non-reversible.

Energy density of battery: High specific energy density batteries are attracting growing attention as possible power sources for electronic vehicles.

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